Exhibit 21.1

LIST OF SUBSIDIARIES

SUBSIDIARIES OF ENERGY TRANSFER EQUITY, L.P., a Delaware limited partnership:

Energy Transfer Partners GP, L.P., a Delaware limited partnership

Energy Transfer Partners, L.L.C., a Delaware limited liability company

Regency GP LP, a Delaware limited partnership

Regency GP LLC, a Delaware limited liability company

Sigma Acquisition Corporation, a Delaware corporation

ETE Sigma Holdco Corporation, a Delaware corporation

ETE Newco 1 LLC, a Delaware limited liability company

ETE Newco 2 LLC, a Delaware limited liability company

ETE Newco 3 LLC, a Delaware limited liability company

ETE Newco 4 LLC, a Delaware limited liability company

ETE Newco 5 LLC, a Delaware limited liability company

ETE Newco 6 LLC, a Delaware limited liability company

ETE Newco 7 LLC, a Delaware limited liability company

ETE Newco 8 LLC, a Delaware limited liability company

ETE Newco 9 LLC, a Delaware limited liability company

ETE Newco 10 LLC, a Delaware limited liability company

SUBSIDIARIES OF ENERGY TRANSFER PARTNERS, L.P., a Delaware limited partnership:

Citrus ETP Acquisition, L.L.C., a Delaware limited liability company

Chalkley Gathering Company, LLC, a Texas limited liability company

Energy Transfer Fuel GP, LLC, a Delaware limited liability company

Energy Transfer Fuel, LP, a Delaware limited partnership

Energy Transfer Group, LLC, a Texas limited liability company

Energy Transfer Dutch Holdings, LLC, a Delaware limited liability company

Energy Transfer Interstate Holdings, LLC, a Delaware limited liability company

Energy Transfer International Holdings LLC, a Delaware limited liability company

Energy Transfer Mexicana, LLC, a Delaware limited liability company

Energy Transfer Peru LLC, a Delaware limited liability company

Energy Transfer Retail Power, LLC, a Delaware limited liability company

Energy Transfer Technologies, Ltd., a Texas limited partnership

ET Company I, Ltd., a Texas limited partnership

ET Fuel Pipeline, L.P., a Delaware limited partnership

ETC Canyon Pipeline, LLC, a Delaware limited liability company

ETC Compression, LLC, a Delaware limited liability company

ETC Energy Transfer, LLC, a Delaware limited liability company

ETC Fayetteville Express Pipeline, LLC, a Delaware limited liability company

ETC Fayetteville Operating Company, LLC, a Delaware limited liability company

ETC Gas Company, Ltd., a Texas limited partnership

ETC Gathering, LLC, a Texas limited liability company

ETC Hydrocarbons, LLC, a Texas limited liability company

ETC Interstate Procurement Company, LLC, a Delaware limited liability company

ETC Intrastate Procurement Company, LLC, a Delaware limited liability company

ETC Katy Pipeline, Ltd., a Texas limited partnership

ETC Lion Pipeline, LLC, a Delaware limited liability company

ETC Marketing, Ltd., a Texas limited partnership

ETC Midcontinent Express Pipeline, L.L.C., a Delaware limited liability company

ETC New Mexico Pipeline, L.P., a New Mexico limited partnership

ETC NGL Marketing, LLC, a Texas limited liability company

ETC NGL Transport, LLC, a Texas limited liability company

ETC North Louisiana, LLC, a Delaware limited liability company

ETC Northeast Pipeline, LLC, a Delaware limited liability company

ETC Oasis GP, LLC a Texas limited liability company

ETC Oasis, L.P., a Delaware limited partnership

ETC Texas Pipeline, Ltd., a Texas limited partnership

ETC Tiger Pipeline, LLC, a Delaware limited liability company

ETC Water Solutions, LLC, a Delaware limited liability company

ETE GP Acquirer LLC, a Delaware limited liability company

ETE Services Company, LLC, a Delaware limited liability company

Fayetteville Express Pipeline, LLC, a Delaware limited liability company (50% interest)

FEP Arkansas Pipeline, LLC, an Arkansas limited liability company (50 % interest)

Fermaca Pipeline Anahauc, S. del R.L. de CV, Mexico limited liability company (50% interest)

Five Dawaco, LLC, a Texas limited liability company

Heritage ETC GP, L.L.C., a Delaware limited liability company

Heritage ETC, L.P., a Delaware limited partnership

Heritage Holdings, Inc., a Delaware corporation

Heritage LP, Inc., a Delaware corporation

Heritage Propane Express, LLC, a Delaware limited liability company

Houston Pipe Line Company LP, a Delaware limited partnership

HP Houston Holdings, L.P., a Delaware limited partnership

HPL Asset Holdings LP, a Delaware limited partnership

HPL Consolidation LP, a Delaware limited partnership

HPL GP, LLC, a Delaware limited liability company

HPL Holdings GP, L.L.C., a Delaware limited liability company

HPL Houston Pipe Line Company, LLC, a Delaware limited liability company

HPL Leaseco LP, a Delaware limited partnership

HPL Resources Company LP, a Delaware limited partnership

HPL Storage GP LLC, a Delaware limited liability company

LA GP, LLC, a Texas limited liability company

La Grange Acquisition, L.P., a Texas limited partnership

LG PL, LLC, a Texas limited liability company

LGM, LLC, a Texas limited liability company

Liberty Pipeline Group, LLC, a Delaware limited liability company (50% interest)

Lone Star NGL LLC, a Delaware limited liability company (70% interest)

Lone Star NGL LLC subsidiaries:

• Lone Star NGL Asset Holdings LLC

• Lone Star NGL Asset Holdings II LLC

• Lone Star NGL Asset GP LLC

• Lone Star NGL Development LP

• Lone Star NGL Pipeline LP

• Lone Star NGL Product Services LLC

• Lone Star NGL Hattiesburg LLC

• Lone Star NGL Mont Belvieu GP LLC

• Lone Star NGL Mont Belvieu LP

• Lone Star NGL Hastings LLC

• Lone Star NGL Refinery Services LLC

• Lone Star NGL Sea Robin LLC

• Lone Star NGL Fractionators LLC

Oasis Partner Company, a Delaware corporation

Oasis Pipe Line Company Texas L.P., a Texas limited partnership

Oasis Pipe Line Company, a Delaware corporation

Oasis Pipe Line Finance Company, a Delaware corporation

Oasis Pipe Line Management Company, a Delaware corporation

Oasis Pipeline, LP, a Texas limited partnership

SEC Energy Products & Services, L.P., a Texas limited partnership

SEC Energy Realty GP, LLC, a Texas limited liability company

SEC - EP Realty Ltd., a Texas limited partnership

SEC General Holdings, LLC, a Texas limited liability company

Tarahumara Pipeline, S. del R.L. de C.V. Mexico (50% interest)

TETC, LLC, a Texas limited liability company

Texas Energy Transfer Company, Ltd., a Texas limited partnership

Texas Energy Transfer Power, LLC, a Texas limited liability company

Thunder River Venture III, LLC, a Colorado limited liability company

Transwestern Pipeline Company, LLC, a Delaware limited liability company

Whiskey Bay Gathering Company, LLC, a Delaware limited liability company

Whiskey Bay Gas Company, Ltd., a Texas limited partnership

SUBSIDIARIES OF REGENCY ENERGY PARTNERS LP, a Delaware limited partnership:

Regency OLP GP LLC, a Delaware limited liability company

Regency Energy Finance Corp., a Delaware corporation

Regency Gas Services LP, a Delaware limited partnership

Regency Field Services LLC, a Delaware limited liability company

Palafox Joint Venture, an un-designated company with a Texas SOS

Edwards Lime Gathering, LLC, a Texas limited liability company

Regency Liquids Pipeline LLC, a Delaware limited liability company

Gulf States Transmission LLC, a Louisiana limited liability company

Regency Gas Utility LLC, a Delaware limited liability company

Pueblo Holdings, Inc., a Delaware corporation

Pueblo Midstream Gas Corporation, a Texas corporation

CDM Resource Management LLC, a Delaware limited liability company

FrontStreet Hugoton LLC, a Delaware limited liability company

WGP-KHC, LLC, a Delaware limited liability company

Regency Haynesville Intrastate Gas LLC, a Delaware limited liability company

RIGS Haynesville Partnership Co., a Delaware partnership

RIGS GP LLC, a Delaware limited liability company

Regency Intrastate Gas LP, a Delaware limited partnership

Regency Midcontinent Express LLC, a Delaware limited liability company

Midcontinent Express Pipeline LLC, a Delaware limited liability company

Zephyr Gas Services LLC, a Delaware limited liability company

Regency Texas Pipeline LLC, a Delaware limited liability company

Regency Midstream LLC, a Delaware limited liability company

Lone Star NGL LLC, a Delaware limited liability company

Ranch Westex JV LLC, a Delaware limited liability company

ELG Oil LLC, a Delaware limited liability company

ELG Utility LLC, a Delaware limited liability company